When should a lock be replaced instead of kept?
Most locks do not fail all at once. They get stiff, then the key starts to stick, then one morning the bolt will not throw and you are leaning your shoulder into the door. If you are in that stage, you are already past the point where another squirt of lubricant fixes anything. A lock that has worn out its internal parts, or that has been forced, needs to be replaced.
Door lock replacement is the right call in a handful of situations. Some are obvious, and some people talk themselves out of for months because the lock still technically works.
A lock that still turns can still be unsafe. If you cannot say how many copies of the key exist, or who has them, the hardware is doing less than you think.
- The key turns only with jiggling, or the cylinder spins without moving the bolt.
- The lock was damaged in a break-in attempt: scratches around the keyway, a bent latch, a cracked strike plate, or a door frame that has been pried.
- The finish is worn through, the lever sags, or the knob wobbles on its spindle.
- The key is stuck, snapped, or so worn that duplicates from it barely work.
- You inherited an unknown number of keys from past tenants, contractors, or the previous owner.
- The lockset is original to a house built decades ago and no longer fits modern standards.
- A door was repainted, rehung, or shifted and the old hardware never lined up properly again.
Replace, rekey, or repair: which one do you actually need?
People often call asking for a replacement when a different job would serve them better, and sometimes the reverse. We would rather tell you that on the phone than sell you more than the door needs.
If the lock is in good mechanical shape and the only concern is who holds keys, rekeying the existing lock changes the internal pins so old keys stop working. It is usually the more economical route when the hardware is sound and you like how it looks. If a single part is loose, sticking, or misaligned, a lock repair may be enough and keeps your current hardware.
Replacement makes sense when repair would be a patch on something tired, when the hardware was damaged or forced, when the lock is of a design that is easy to defeat, or when you simply want a different level of security or a different style. It also makes sense when parts for an older lockset are hard to find, which is common with certain mid-century hardware.
When we look at your door, we will tell you which of the three fits. Sometimes the answer is a mix: a new deadbolt on the front door, a rekey on the back, and a small repair on the side gate latch.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does lock replacement work, step by step?
Here is how a typical visit goes, whether it is a front door lock replacement at a house or a set of doors at a small office. Details change by door, but the order stays the same.
- You call (213) 577-1366 and tell us what is wrong: what kind of door, what the lock is doing, and whether it is currently secure. A person answers, any hour of the day or night.
- We send a van from our mobile service, or you can bring hardware to our Westwood storefront at 10740 Wilshire Blvd if the situation allows.
- The technician inspects the lock, the door edge, the strike plate, and the frame. Most failed installs trace back to a door or frame problem, not the lock itself, so this look matters.
- We explain what we found and what your options are, including whether repair or rekeying would do the job. You decide before any work starts.
- We remove the old hardware and check the bore holes, latch fit, and backset so the new lock sits square and the bolt travels cleanly into the frame.
- We install the new lock, reinforce the strike plate where the frame needs it, and test the bolt, the latch, and every key with the door open and closed.
- You get your keys, and we show you how the lock operates. Old, damaged hardware is taken with us unless you ask to keep it.
What affects the cost of lock replacement in Duarte?
We do not quote a number before we know what the door needs, and we will not put figures on a web page that could be wrong by the time you read them. What we can do is tell you honestly what moves the cost up or down, so there are no surprises when the technician gives you a quote.
The biggest factor is the hardware itself. A basic knob set, a standard deadbolt, a heavy-duty grade deadbolt, a high-security cylinder, and an electronic lock sit in very different places. Within each category, build quality varies a lot, and heavier hardware costs more to make and install.
The condition of the door and frame comes next. A lock replacement on a sound door is straightforward. If the door has been kicked, the jamb is split, or a bore hole was cut oversized by a previous install, extra work is needed to make the new lock actually secure.
Other factors include how many locks are being replaced, whether you want them keyed alike, whether the job is at a house, an apartment, or a commercial door, and what time of day you need us. After-hours and emergency visits involve different logistics than a scheduled morning appointment. If your situation is not urgent, say so, because scheduling flexibility can keep a job on the lighter-cost side.
Ask for the full scope before you agree: parts, labor, and any frame work. A trustworthy locksmith will be glad to explain each line.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can you handle apartment and business lock replacement too?
Yes. The principles are the same, but the hardware and the stakes are different.
For apartment lock replacement, the common triggers are tenant turnover, a lost key, or a door that was damaged during a move. Tenants should check their lease and talk to the landlord before changing anything, since many leases require management to hold a copy of the key. If you manage rental units, our page on locksmith services for landlords covers how we work with property owners on turnovers and multiple doors.
Commercial lock replacement is a broader subject. Business doors take far more cycles than a house front door, and the hardware has to survive that. A shop with a failing lockset on its front door is losing security with every day of use. We replace cylinders, deadbolts, and entry sets on business doors, and for storefront glass doors and aluminum frames we can look at storefront lock repair when the existing hardware is worth saving.
A business security upgrade often starts with a simple question: who has keys, and which of them should still have them? If staff has turned over, replacing or rekeying the locks is cheap protection compared with what a break-in costs. For larger projects such as exit hardware, closers, or matched locksets across several doors, see our overview of commercial door hardware.
What does a security lock upgrade involve?
Sometimes the lock is not broken at all, and you just want better. A security lock upgrade usually means replacing a builder-grade lockset with hardware that is harder to pick, drill, bump, or kick in.
On most exterior doors, the first improvement is a quality deadbolt with a solid bolt throw and a reinforced strike plate with long screws that reach into the framing rather than just the thin jamb. That strike plate detail is where many forced entries succeed, and it costs little to fix while the lock is being swapped. If your door has no deadbolt, or only a spring latch, see our page on deadbolt installation.
If you want keyless entry, keypads, or phone-linked locks, we can talk through the options on our smart lock installation page. We will also tell you plainly when a mechanical lock is the more dependable choice for a particular door, especially one that gets dust, heat, and sun.
We do not push the most expensive option. The right lock is the one that fits your door, your habits, and what you are protecting.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Lock replacement for Duarte homes: what we see around town
Duarte has a lot of postwar single-family housing built from the 1940s through the 1960s, mostly ranch homes and modest bungalows along the Huntington Drive flats in the 91010 ZIP code. Many of those homes still carry original mid-century locksets and garage hardware. After sixty or seventy years, those parts are worn, and the pin tumblers inside have loosened. If you have never changed the front door lock in a house like that, replacement is often the sensible move instead of another repair.
The Duarte Mesa and the canyon areas carry larger hillside lots and custom homes. That includes the Fish Canyon area, the Mel Canyon area, and the Spinks Canyon area. A typical job there is a sale or tenant turnover: the new occupants want fresh hardware on every exterior door, and often the side gates and outbuildings too. Larger lots near Fish Canyon often also need gate and padlock service, which is different work from a door lock swap, though we can handle both in one visit.
Townhome and apartment complexes cluster near Huntington Drive and the City of Hope campus area. Around that campus, visitor housing and rentals see frequent turnover, so lock replacement after a lost key or a long-term guest leaves is a regular request. Along the Huntington Drive corridor, businesses with aging storefront hardware are another common call.
Climate plays a part too. Duarte sits against the San Gabriel foothills with hot, dry summers and periodic Santa Ana winds that funnel out of the canyons. Two effects matter for exterior locks. Sun-exposed doors expand in the heat and can bind against the frame, which strains the latch and bolt. Wind-blown grit works into keyways and cylinders and wears them faster. If your front door lock gets direct afternoon sun and feels gritty, that is a reason to replace it with a sealed, well-built cylinder rather than keep nursing the old one.
Our storefront is in Westwood, and we serve Duarte with mobile vans, so the work happens at your door.
Why call Wilshire Lock & Key for lock replacement?
We have been in business since 1987, and David, the owner and lead technician, oversees the work. That means when a job needs a second opinion, there is someone with decades of hands-on experience to ask.
We are one company. When you call (213) 577-1366, you reach us, not a national dispatch center that sells your job to whichever contractor picks it up. We run a real storefront at 10740 Wilshire Blvd in Los Angeles plus mobile locksmith service, and we serve 140 cities across Los Angeles and Ventura counties, Duarte among them.
Our phone is answered 24 hours a day, 7 days a week, all year. A broken lock does not pick a convenient hour, and neither do we require you to.
We also try to be straight about what you need. If a rekey will do, we say so. If your door frame is the real problem, we say that too.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How can you check any locksmith before they work on your door?
California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services (BSIS), called an LCO license. Ask any locksmith for it, including us, before work begins, and check it with BSIS yourself.
A few other things are worth watching for: a technician who will not tell you what they plan to do before starting, a quote that changes sharply once they arrive, a company that cannot give you a local address, or a locksmith who immediately wants to drill out a lock that could be picked or removed intact.
Good locksmiths welcome questions. Ask what hardware is going in, what it is rated for, and what else on the door might need attention.
Frequently asked questions
How do I know if I need lock replacement or just a repair?
If the lock is loose, sticky, or misaligned but the internal parts are sound, repair may do it. If the cylinder is worn, the lock has been forced, keys no longer work reliably, or replacement parts are hard to find, replacement is usually the better choice. A technician can tell in a short inspection.
Can you replace a broken lock in the middle of the night in Duarte?
Yes. Our phone at (213) 577-1366 is answered 24 hours a day, 7 days a week. Tell us whether the door is currently secured, and we will plan the visit around that. If it is a lockout instead, we will deal with getting you in first.
Will the new lock work with my existing door?
Usually, yes. Most residential doors take standard bore sizes. We check the bore holes, backset, door thickness, and strike plate before installing, and we adjust or reinforce them if the old hardware was installed poorly or the door has shifted.
How much does front door lock replacement cost?
It depends on the hardware you choose, the condition of the door and frame, how many locks are involved, and what time you need service. We do not post numbers online because they would not be accurate for your door. Describe your situation on the phone and we will explain the cost drivers before any work begins.
Can I keep the same key for all my doors?
Often, yes. Locks can be ordered or rekeyed to match one key, which is convenient for houses with a front door, back door, and garage entry. It does mean one key opens everything, so some people prefer separate keys for higher-security doors.
Do you replace locks for rental units and apartments?
Yes. We handle apartment lock replacement for tenants and property managers. Tenants should check lease terms and tell management first, because many leases require the landlord to keep a copy of the key.
Do you do commercial lock replacement for Duarte businesses?
Yes. We replace entry locks, deadbolts, and cylinders on business doors, and we can recommend a business security upgrade when keys have been lost or staff has turned over. Heavier-use doors usually need sturdier hardware than a house door.
Should I replace my locks after buying a house?
It is a smart step. You cannot know how many keys exist for the previous owner's locks. Replacement is a clean reset, and rekeying is the lighter-cost route if the existing hardware is in good condition. We can look at each door and tell you which makes sense.
Will Santa Ana winds and summer heat damage my door locks?
They can wear them faster. Heat can make a sun-exposed door expand and bind, which strains the latch. Wind-blown grit gets into keyways and cylinders. If your exterior lock feels gritty or the door sticks in hot weather, a replacement with quality hardware, plus a quick door adjustment, often solves it.
More locksmith help in Duarte
Lock Replacement near Duarte
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
